Radar stealth was a remarkable technical feature of the fourth-generation fighter aircraft, the damage of the stealth coating would seriously affect the stealth performance of the aircraft. This paper focuses on the membrane treatment of coating in the process of stealth coating damage repair, the effect of laser cleaning process on the cleaning effect of stealth coating on the surface of aircraft metal construction was studied. The results show that laser pulse width has the greatest influence on the laser cleaning of stealth coating, so pulse width should be prioritized when selecting the process parameters. And during the process experiment, the relationship between the effect of laser cleaning and process parameters were respectively negative correlation with scanning speed, positive correlated first and then weakly correlation with laser power, weakly correlated first and then positive correlation with pulse width, positive correlation with scan number. Finally, the optimal laser cleaning process parameters for the stealth coating of 500 μm on the surface of the metal structures were obtained by comparing the experiments between the preferred and the solution groups.

雷达隐身是第四代战斗机的显着技术特点，隐身涂层的损坏将严重影响飞机的隐身性能。本文重点研究了隐身涂层损伤修复过程中涂层的成膜处理，研究了激光清洗工艺对飞机金属结构表面隐身涂层清洗效果的影响。结果表明，激光脉冲宽度对隐形涂层激光清洗影响最大，因此在选择工艺参数时应优先考虑脉冲宽度。并且在工艺实验过程中，激光清洗效果与工艺参数的关系分别与扫描速度呈负相关，与激光功率先正相关后弱相关，与脉冲宽度先弱相关后正相关，与脉冲宽度正相关。扫描号码。最后通过优选方案与方案组的实验对比，得出金属结构表面500 μm隐形涂层的最佳激光清洗工艺参数。